patch-viewer/ext/manifest.json

{
  "manifest_version": 2,
  "name": "Patch Viewer",
  "version": "0.1.0",

  "description": "Add a link to the raw patch view on GitHub commit pages",

  "content_scripts": [
    {
      "matches": ["*://github.com/*/*/commit/*"],
      "js": ["patch-viewer.js"]
    }
  ]
}